The three hills & mountains outlined but not reproduced accurately on the left hand side of a number of shots are Park Fell (Hill), Simon Fell and Ingleborough (both mountains). On the right hand side of at least one shot was the ridge route from Whernside down to Ingleton.
It was clearly not shot in the Ribblehead area as the rock there at that level is carboniferous limestone and Ribblehead viaduct is built of what was locally called "Dent Marble" which is also a limestone. Another give away was walling in a couple of shots which was either sand or gritstone and not as, around Ribblehead, limestone. A nice walk is to take the Horton Road from Ribblehead, turn right past the railway cottages and then follow the path up over those three hills and come down from Ingleborough via the 3 peaks track to Chapel le dale, cross the valley to examine St Leonards Church at Chapel le Dale where many of the navvies and their families were buried, particularly after one terrible cholera outbreak. Then walk back to Ribblehead along either the footpath on the Whernside side of the Valley (or go via Whernside itself on the 3 peaks track.

Much information about the railway at Ribblehead is available at the visitor centre at the station if it is open, it is run by volunteers and although it is open on a daily basis(volunteers being available) in summer winter openings may be more problematical. They have displays about a number of aspects as well as selling books, other memorabilia and doing cups of tea. Much information about Ribblehead, the building of the viaduct and the railway can be got from Peter Baughn's "North of Leeds" the history of the Midland Railway from Leeds to Carlisle,(bit heavy going). The late Bill Mitchell, once editor of the Dalesman, has written an excellent book "Thunder in the Mountains". He also wrote (& produced) a number of earlier books on navvy shanty towns and Settle & Carlisle Railway.

The contractor's locomotive was Sir Berkeley Manning Wardle, works no 1210, built in 1981 in Leeds (25 years after the S&C opened to the public). Thatloco is owned by the Vintage Carriages Trust based at Ingrow near Keighley, but I believe it is currently on loan to the Middleton Railway in Leeds. Clearly there as been a lot of work done on the computer to miss-match railway and shanty scenes with the location at Ribblehead. And that bit could have done without a sight of a standard BR brakevan complete with number in Bauxite red. I think the Embsay & Bolton Abbey Railway may also have be used for the shots of the carriages, looked like part of their vintage train.

However to be fair to the programme they only give strong hint of Ribblehead. The scenario of the"midland" needing to link up with the London line is totally fictitious. The problem the Midland had was getting to Carlisle & Scotland as the LNWR messed them about at Low Gill, the Settle Carlisle being built to avoid that difficulty... full story in Mr Baughn's book.

Thought I recognised the singer's voice not changed much since the "Sharpe" series.

However I enjoyed last night's first episode despite the awful ham fisted attempts it make it look like Ribblehead. Looking forward to the next 7 episodes. Maybe they will do a sequel based on the other nearby major piece of S&C engineering... Blea Moor Tunnel....now that could be a dark series!